Embroidery machine



Nov. 23, l1948.

B. G. FORTUNA l-:TAL 2,454,379 EMBROIDERY MACHINE 2 Sheets-Sheet 1 FiledApril 4, 1945 INVENTORS .52W/70 Fortuna. d

Emil Helln er Gl-MEW ATTO RN ESS B. G. FORTUNA ETAL Nov. 23, 9 48'.

EMBROIDERY MACHINE 2 She'eiS-Sheet 2 Filed Apil 4, 1945 BY EmilHeZZL'Ker ATTORNEHS Patented Nov. 23, 1948 UNITED STATES PATENT OFFICEEMBROIDERY MACHINE Bruno G. Fortuna and Emil Helliker, North Bergen, N.J.

Application April 4, 1945, Serial No. 586,482

This invention concerns embroidery machines and refers more particularlyto the platen rods which engage the shuttle guides of the so calledSwiss embroidering machine.

In these machines,` as is well known in the art, the driver bar actuatesthe shuttle `guides by means of the platen rods, and therods are held onthe bar by means of a screw and interposed leaf spring, it beingnecessary that the connection between the two should be resilient.Various constructions have been resortedto in attempts to produce aresilient connection between the driver bar and platen rod which wouldiix the rod firmly against movement longitudinal to itself, withoutsubstantial increase in the size or weight of either member.

In solving the above problem it was found desirable to provide a platenrod with two small recesses on its upper surface and located inwardly ofthe curve connecting the body of the rod to a substantially verticalupward `extending end portion. The leaf spring is then provided withfingers which extend down into these recesses, preventing outwardlongitudinal movement of the platen rod. A further feature of this rodis that, if the recesses are formed by stamping, a slight bulge extendslaterally from the rod, effectively preventing inward longitudinalmovement thereof by reason of contact with the sides of the slot inwhiclithe bar rests. This eliminates the present expedient of forming aslight but sharp downward angular extension of the body of the baradap-ted to engage the bottom surface of the slot in which the barrestsin order to iix it against inward longitudinal movement.

In operation, the ,platen rod, extends inwardly from the driver bar tothe shuttle guides, actuating the latter, in manner well known in theart. The fingers and recesses of the present invention prevent outwardlongitudinal movement of the,

platen rods, which is undesirable and results in a lapping of thecoacting surfaces of rod and bar which promotes sliding instead of thedesired frictional engagement.

The invention will appear more clearly from the following detaileddescription when taken in connection with the accompanying drawingsshowing, by way of example, preferred embodiments of the inventive idea.

In the drawings Figure l is a top elevation of the driver bar, platenrod and leaf spring clamp.

Figure 2 is a longitudinal vertical section of the same along the line 22 of Figure 1.

5 Claims. (Cl. 112-95) Figure 3 is a transverse vertical section of thesame along the line 3--3 of Figure 1. n

Figure 4 is a perspective view of the improved platen rod.

Figure 5 is a side elevation, partly in section, of the invention inoperative position on an embroidery machine.

Figure 6 is a perspective view of the improved leaf spring clamp. l

Figure 7 is a perspective View of the conventional driver bar incombination with whichthe invention is adapted to operate. e

Referring to Figure 5, the conventional Swiss embroidery machine lli isrevealed as comprising a fabric frame Il slidably mounted between guidesl2, I3. Needles i4 and punches l5 are detachably mounted on theirrespective holders I6, l1, the two latter being separately actuatableaxially of the needles and punches for the purpose of punching andembroidering the work which is held inthe frame Il by the gripping barsI8. The presser ngers I9 are mounted on a finger bar 20 which is in turnmounted on the rockerbar 2|. The shuttle bar 22 carries a multif plicityof shuttle guides 23 containing the shuttles, not shown. The driver bar24 is formed with slots 25, 25A in which the upper and lower platen rods26, 21 fit. The lower platen rods 21 are de tachably and rmly held inslots 25A, as by a plate 28 and screw 29. The upper platen rods 26 areresilientlyI connected to driver bar 24 in slots Cil 25 by leaf springclamp 3D and screw 3l engaging the threaded hole 3IA. The platen rods26, 21 engage the shuttle guides 23 to actuate the same.

The platen rod 2B comprises an elongated body Yportion. 32 ofsubstantially rectangular cross section adapted to fit in the slots 25of driverbar 24. The tip 33 of rod 26 is parallel to body portion 32andis Connected thereto byr a sharp downwardly and outwardly curvedportion 34 whereby the rod 26 is locked against outward movementrelative to driver bar 24. The opposite end 35 of platen rod 23 extendssubstantially vertically upward. So much of platen rod 26 isconventional. lThe invention consists in forming the body 32 thereofwith two recesses 36 formed in the top surface thereof adjacent theupturned end portion 35, said recesses 36 preferably being formed bystamping so as simultaneously to form laterally extending bulges 3l onbody 32 below recesses 36, the invention also including fingers 38formed on spring clamp 30 and adapted to engage the recesses 36.

Spring clamp 30 is a substantially arcuate leaf spring comprising twosubstantially chordal under surfaces 39 adapted to bear upon driver bar24 andplaten rods 26, and further comprising holes 40 spaced atintervals to permit the passage of screws 3| to the tapped holes 3 IA ofthe driver bar 24. An apron 4I extends downwardly from the body 30,having recesses 42 for the platen rods 26, the sides of the recesses 42corresponding to the body 32 of rods 26 with recesses 36, and thusincluding the lingers 38 adapted to engage recesses 36.

The operation of the embroidery machine l0 is more positive due to thepresence of the modiflcations constituting the invention.-Infiparticular, the tips 33 4of platen rods 2 6 engage the shuttleguides 23 and are not deflected outwardly by the engagement, since thefingers 38 engaging recesses 36 positively position-the rodsf26 axially.The bulges 3T engage the sides of slots 245V to prevent inward axialmovement of rods 52'6. The requirement is thus met of a positiveconnection between :platen rods 2.6 and vdriver bar 2,4., 'theconnection s'til'l `being -resilient fdue `to spring fclampfI 30, therequirement of resiliency Ibeing well understood in the art.

It yis apparent that the specinc 'illustrations -sh'ow-na'bove have beengi-ven by wa-y'gof illustrai tion only and not by way of limitation,andthat thestructuresabovewdescribed aresubject to wide variation andmodification without departing ^from the scope of intent of 'theinventionfall of ,v

vwhich variations fand imodications are -to be included within the scopeATof :the ,present inven tion.

What'is claimed is:

A1. In an vernloroidering mac'hine comprising a ldriver bar vhavingslots `formed therein, rsaid rmachine Afurther comprising fa-,platen rodadapted to -t 'in said slots and -a substantially `arcuate spring-clam'p yadapted"fto'vbear on'said driver bar and-ffplatenrod toresilient/ly position :said rod in ysaid slots, `said Aplaten rodcomprising 'an elongated body Yfportion of Substantially rectangularcross section and Aa-,sha'rply downwardly and outwardly curvedtip-portion extending parallel to said .body

portion and adapted `4to vengage a :shuttle guide the end opposite theshuttle guide engaging end, the said bar having a pair of marginalpressed recesses at the juncture of the rod and upstanding portion,lateral bulges formed by the material pressed from the recesses forcontacting the driver bar to prevent relative forward movement betweenthe said rod and bar, a spring clamp adapted to resiliently bear uponsaid driver bar rand platen rod lto resilient-)ly vconnect the twotogether 'and position the said rod in said slots, and finger portionson said spring clamp for engagement with the forward ends of saidrecesses Ito :prevent relative rearward movement between the bar androd.

'73. platen lrod for an embrodiery machine 'said-rod comprising ahorizontal portion and a ver-tical rpor-tion ybent therefrom, a pair ofmarginal recesses in the horizontal portion at the juncture thereof withthe verticall portion and bulging portions extending laterally from apoint fbel'ow ,said recesses.

4. InPan-embroidering machine, in combination 'with adriver bar havingslots yformed therein, a platen rod adapted to -t -in saidslots'andeengage a shuttle guide lof .said machine, said ,platen rodcomprising -a horizontal portion, a vertical end fportion extendingtherefrom and being formed with -a :recess therein at ythe juncture Aofthe horizontal and -yertical portions :and -a spring clamp adapted toresiliently .bear uponfsaid-driver bar and Vplaten rod tof-resilientlyconnect-the two together and position -said rod `in :said slots, saidspring clamp comprising-a f-nger portion adapted to engage'ithe forwardyend of said .-recess.

5. -In an embroidery 'machine comprising a driver bar having slotsformed rtherein, said machine further comprising a platenrod adapted tont insaid slots and a substantially arcuate spring -clanrp yadapted .tobear .on said driver.v bar and `platen rod rto-resiliently position'said.-rod zin said slots, vthe saidfplaten rod having a ,horizontal portionandan upstand-ing end extending'therefrom, the improvement 1comprisingrecesses formedin .said platen srod =at the juncture of the horizontalportion and upstanding end, and fingers formed by -said spring clampadapted -to engage the forward ends of said recesses for .the preventionof .axial movementof -said rod .relative ltoesaid bar. l

REFERENCES vCITED The `following references rare of .record in the fileof this patenti:

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